code: def __exit__(self, *args):
      set_module_training_state(self.module, self.prev_training_state)
      return False
  
file_path: advertorch/advertorch/context.py
imports: from contextlib import contextmanager
label_desc: Use image node_id 3 for calling the ctx_eval obj's underlying member method code with example usage: obj.__exit__() and returns: False